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A platform for research: civil engineering, architecture and urbanism
Low-shrinkage high-crack-resistance cement mortar and preparation method thereof
The invention discloses low-shrinkage and high-crack-resistance cement mortar and a preparation method thereof. The concrete is prepared from the following raw material components in percentage by mass: 16.0 to 20.0 percent of cement, 0.02 to 0.06 percent of ultra-high molecular weight polyethylene fiber, 1.0 to 2.0 percent of magnesium oxide expanding agent, 10.0 to 12.0 percent of fly ash, 0.05 to 0.1 percent of polycarboxylic acid water reducing agent, 59.0 to 60.0 percent of fine aggregate and 9.9 to 10.0 percent of water. And the cement is low-heat cement. The preparation method comprises the following steps: preparing a premix, and curing to obtain the low-shrinkage high-crack-resistance cement mortar. According to the present invention, the drying shrinkage deformation of the cement mortar can be significantly reduced, the initial cracking time of the cement mortar can be delayed, and the anti-cracking performance of the cement mortar can be improved.
本发明公开了一种低收缩高抗裂水泥砂浆及其制备方法，该混凝土包括以下质量百分数的原料组分：水泥16.0%‑20.0%、超高分子量聚乙烯纤维0.02%‑0.06%、氧化镁膨胀剂1.0%‑2.0%、粉煤灰10.0%‑12.0%、聚羧酸减水剂0.05%‑0.1%、细骨料59.0%‑60.0%以及水9.9%‑10.0%；所述水泥为低热水泥。该制备方法先制得预混料，再经过养护制得所述低收缩高抗裂水泥砂浆。本发明能够显著降低水泥砂浆的干燥收缩变形，延迟水泥砂浆的初始开裂时间，提升水泥砂浆的抗裂性能。
Low-shrinkage high-crack-resistance cement mortar and preparation method thereof
The invention discloses low-shrinkage and high-crack-resistance cement mortar and a preparation method thereof. The concrete is prepared from the following raw material components in percentage by mass: 16.0 to 20.0 percent of cement, 0.02 to 0.06 percent of ultra-high molecular weight polyethylene fiber, 1.0 to 2.0 percent of magnesium oxide expanding agent, 10.0 to 12.0 percent of fly ash, 0.05 to 0.1 percent of polycarboxylic acid water reducing agent, 59.0 to 60.0 percent of fine aggregate and 9.9 to 10.0 percent of water. And the cement is low-heat cement. The preparation method comprises the following steps: preparing a premix, and curing to obtain the low-shrinkage high-crack-resistance cement mortar. According to the present invention, the drying shrinkage deformation of the cement mortar can be significantly reduced, the initial cracking time of the cement mortar can be delayed, and the anti-cracking performance of the cement mortar can be improved.
本发明公开了一种低收缩高抗裂水泥砂浆及其制备方法，该混凝土包括以下质量百分数的原料组分：水泥16.0%‑20.0%、超高分子量聚乙烯纤维0.02%‑0.06%、氧化镁膨胀剂1.0%‑2.0%、粉煤灰10.0%‑12.0%、聚羧酸减水剂0.05%‑0.1%、细骨料59.0%‑60.0%以及水9.9%‑10.0%；所述水泥为低热水泥。该制备方法先制得预混料，再经过养护制得所述低收缩高抗裂水泥砂浆。本发明能够显著降低水泥砂浆的干燥收缩变形，延迟水泥砂浆的初始开裂时间，提升水泥砂浆的抗裂性能。
Low-shrinkage high-crack-resistance cement mortar and preparation method thereof
一种低收缩高抗裂水泥砂浆及其制备方法
FANG LEI (author) / ZHOU JIAQI (author) / CAI HUANGYI (author) / QUE YUN (author) / XU SONG (author) / HUANG JIANGHUAI (author) / LI HAIFENG (author)
2023-10-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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